GMOs Archive

Trangenic Insects

  Several insects can now be genetically modified. The fruit fly Drosophila has been investigated at the molecular level for a long time and, not surprisingly, methods exist for introducing novel genetic material into these flies. P elements are transposons …

Transgenic Mosquitoes

The three diseases that kill most people are acquired immunodeficiency syndrome (AIDS), tuberculosis, and malaria. Each year, malaria infects some 300 to 500 million people and kills around 2 million, mostly African children. The Plasmodium parasite is transmitted by mosquitoes—as …

Knockout Mice for Medical Research

Transgenic animals, mostly mice, are of great value in the genetic analysis of inherited diseases and cancer. Here we are interested not so much in adding a cloned transgene as in discovering the function of genes already present. The general …

Transgenic Animals

NEW AND IMPROVED ANIMALS For thousands of years people have improved crop plants and domestic animals by selective breeding, mostly at a trial-and-error level. Woollier sheep and smarter sheep dogs have both been improved through many generations of selective breeding. …

BT Toxin and Butterflies

Another issue with transgenic plants is the effect they may have on nontarget organisms , that is, any plants or animals inadvertently exposed to the transgenic crop or insecticide. An article in the journal Nature suggested that Monarch butterflies were …

Insect Resistance-Transgenic Plants

Although weeds are a nuisance, even worse enemies of plants, and correspondingly more expensive to farmers, are: 1 . Insects and roundworms 2 . Fungal diseases (molds, blights, rusts, and rots) 3 . Viral diseases of plants It is possible …

Particle Bombardment Technology

Another strategy for getting a gene of interest into plant tissue is to blast the DNA through the plant cell walls with a particle gun. Unlike Ti plasmid transfer by Agrobacterium , this technique works with all types of plants. …